HK USP 9mm Tactical

[GSPguy]

I have a Rugged Obsidian suppressor in jail and wanting a HK USP as a 9mm host. Does anyone have experience shooting powder coated cast bullets out of one?

I am wondering about bullet size and hardness for best accuracy and to keep leading down in the polygon barrel.

 

[fiver]

the point of powder coat is to keep the lead separated from the steel.

anyway from what i remember the H&K's have kind of a tight chamber and barrel so your gonna have to determine what you can chamber versus what you think you'll be able to chamber.